5561021041 has 4 divisors (see below), whose sum is σ = 5561275300. Its totient is φ = 5560766784.

The previous prime is 5561020991. The next prime is 5561021057. The reversal of 5561021041 is 1401201655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2703584016 + 2857437025 = 51996^2 + 53455^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561021041 - 2¹¹ = 5561018993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5561020997 and 5561021015.

It is not an unprimeable number, because it can be changed into a prime (5561028041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90876 + ... + 139213.

It is an arithmetic number, because the mean of its divisors is an integer number (1390318825).

Almost surely, 2^5561021041 is an apocalyptic number.

It is an amenable number.

5561021041 is a deficient number, since it is larger than the sum of its proper divisors (254259).

5561021041 is a wasteful number, since it uses less digits than its factorization.

5561021041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254258.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 5561021041 is about 74572.2538280827. The cubic root of 5561021041 is about 1771.6782194432.

Adding to 5561021041 its reverse (1401201655), we get a palindrome (6962222696).

The spelling of 5561021041 in words is "five billion, five hundred sixty-one million, twenty-one thousand, forty-one".